Charlton have denied their player permission to play in the competition as it would prevent him being available for the Addicks in later rounds.

But boss Russell Slade was boosted with the news that Stoke had allowed Ryan Brunt to play in the game. The forward has scored three goals in 14 appearances for the O's and is expected to continue in attack.

The game is likely to come too soon for Kevin Lisbie and Scott Cuthbert, who have just returned to training following hamstring injuries.

Goalkeeper Jamie Jones is fully fit after a shoulder injury and is pushing to retain his place from 20-year-old Ryan Allsopp.